The 21-year-old earned an unrivalled score of 84.40 points after executing a corked 720 into a right-side 540 through the women's jump line.

It put her comfortably clear of nearest challengers Giulia Tanno of Switzerland and Emma Dahlstrom of Sweden, who scored 77.40 and 76.20 respectively.

"I'm ecstatic right now," said Tsubota.

"It was a frustrating week for all of us.

"It was windy, it was snowy, it was all kinds of weather.

"Today was the first time I really hit the jumps, but it wasn't too bad.

"We're all so good, we know how to do the tricks, it's just getting used to the jumps.

"But we're all at the level where we can do that."

Norway’s Tiril Sjaastad Christensen remains top of the overall World Cup standings on 145 points after coming fifth today.

Tsubota is second on 129 points, followed by Italy’s Silvia Bertagna, who finished 15th today, on 96.

Meanwhile in the men’s event, the gold medal went to the reigning Olympic champion Joss Christensen on home snow.

The American registered a score of 89 points on his first run to relegate team-mate McRae Williams to second place on 88.40 and Norway’s Oystein Braaten to third on 86.40.

"I’m really excited how things ended up," said Christensen.

"In the finals I wanted to do some crazier stuff, maybe some bigger tricks, but I just wanted to put one run down and I’m glad I tried to take a safe run.

"I’m just glad it worked out."

Christensen’s victory sees him move onto 160 points and take the World Cup leader's bib from Great Britain’s James Woods, who finished eighth today.

Braaten has also leapfrogged Woods with his tally of 140 giving him an eight-point advantage over the Briton.

The FIS Freestyle Skiing World Cup is due to continue on February 3, when qualification for the men’s and women’s halfpipe events in Park City, United States are set to take place.